The debacle in Florida has been a microcosm for the nation. Lethal injection as an execution protocol was by this time last year already facing growing scrutiny. It was immediately apparent that Diaz’s execution could spell serious trouble for the American death penalty’s legal machinery.

And indeed that machinery has now ground to a halt, if only a temporary one. Facing judicial confusion, the Supreme Court is weighing a potential landmark case on the constitutionality of lethal injection, with actual executions — at least involuntary ones — under a de facto moratorium for months yet to come.